Answer:
George's mistake would be: 
Instead of 2x + 40, she has made - x + 20.
Step-by-step explanation:
Slope - Intercept Form = y = mx + b
y + 20 = 2(x +20)
y + 20 = 2x + 40
    - 20          - 20
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y = 2x + 20
(Should have been the answer)
BUT,
George's Solving:
y + 20 = 2(x + 20)
y + 20 = -x + 20
George's Mistake would be her miscalculation during her 2nd step. Where instead of distributing 2 to (x + 20), she has changed it to -x + 20, when in reality, it should have been 2x + 40.
 
        
             
        
        
        
Answer:
but where is the diagram 
Step-by-step explanation:
????????
 
        
                    
             
        
        
        
Answer:
To find Felicity's hourly rate you first want to find out how many hours she has babysat altogether. In order to do this we need to take 2*10=20
With that 20 we can divide it by 180 to find her hourly rate
180/20= 9
So she makes $9 an hour
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
time = 49 hours
speed =  7 miles/hour
speed = distance / time 
∴ distance = speed × time
= 7 × 49 
= 343 miles
 
        
             
        
        
        
Answer:
x=2
Step-by-step explanation:
this is just like the last one. since it is vertical it only includes the x value 2